When the PC crashes with a blue screen of death it generates a dump file which contains information about the core state of the system when it crashed and can be used to determine what caused the BSOD in the first place. In general I find there's two possible incomes, either it will point to a single driver consistently (often a graphics card drive or another peripheral) or it will point to a core windows driver, it may point to a different windows driver on successive BSOD's. In the first case then it's possible a fault with that specific hardware or its driver while the latter is usually indicative of a bigger problem but can be more difficult to resolve. The specific driver crashes will tend to happen more predictably such as carrying out a certain action whereas the latter will often be random with no obvious pattern and often more frequent.

Amusingly I wrote this for a Latitude 11 I have which was blue screening occasionally during full screen video playback which I decided to get around to fixing, the analysis pointed to the graphics card driver so I made sure the drivers were up to date, the bios was up to date etc. and made the problem far worse with it BSODing every five minutes during playback.

I also gave up and reinstalled it, since then it's working fine so must have been an issue with the original install or something gone wrong.